Admin Order Details - Blank Page

[flencas]

Hello.

I cannot access the details of my orders (PrestaShop 1.7.6.1) --- Blank page with 0 errors.

if i turn on debug mode - everything works fine, there are no errors. Debug mode off = blank page.

cache cleared by admin and manualy by Ftp - no result.

server error log entries:

1. FastCGI: comm with server "/usr/local/fastcgi/cgi-bin/php-cgi" aborted: read failed,

2. AH00524: Handler for fastcgi-script returned invalid result code 1, referer: http://www.shop.com/admin/index.php?controller=AdminOrders&token=xxx

 

can anyone help me?